Home / 759,729.06-1,048,355.73-420,190.02

Finding the Fourth Proportional to 759,729.06, 1,048,355.73 and 420,190.02

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Solution

The fourth proportional to 759,729.06, 1,048,355.73 and 420,190.02 is: 579,823.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,729.06 : 1,048,355.73 = 420,190.02 : x
  2. Step 2: Convert to fraction form
    759,729.06/1,048,355.73 = 420,190.02/x
  3. Step 3: Cross multiply
    759,729.06x = 1,048,355.73 × 420,190.02
  4. Step 4: Simplify right side
    759,729.06x = 440,508,615,155.82
  5. Step 5: Solve for x
    x = 440,508,615,155.82/759,729.06
  6. Step 6: Final answer
    x = 579,823.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.